Driving Method of Plasma Display Panel and Plasma Display Device

Abstract

In a technique of a PDP having a four-electrode structure of (X, Y, Z, and A), the technique capable of preventing a delay of a discharge timing due to a voltage applied to the Z electrode is provided. In the four-electrode product structure of (X, Y, Z, and A) and a PDP in which rows are formed at both sides of a Y electrode, for a voltage waveform applied to each electrode (for example, X 1 , Zo, Y 1 , Ze, X 2 , Zo, and Y 2 ) from the drive circuit side, a voltage (Vt) of the narrow width trigger pulse ( 65 ) of a positive polarity applied to the Z electrode is configured to be a voltage higher than the voltage (Vs) of the sustain pulses of X and Y ( 45, 46, 55 , and 56 ).

1 . A driving method of a plasma display panel including, on a first substrate, a first and a second electrode groups, for discharges, plurally extending in a first direction and disposed approximately in parallel, a third electrode group disposed in a gap between the first and the second electrodes, the discharge being executed in the gap, and a first dielectric layer and a protective layer covering the first to the third electrode groups, and further including, on a second substrate opposed to the first substrate, a fourth electrode group plurally extending in a second direction approximately perpendicular to the first direction and disposed approximately in parallel, a second dielectric layer covering the fourth electrode group, a barrier rib disposed at both sides of the fourth electrode, and a phosphor layer formed between the barrier ribs and on the second dielectric layer,
 the method comprising the step of, when a sustain discharge is executed between the first and the second electrodes, before a potential difference of the sustain discharge between the first and the second electrodes is generated, making a potential difference between the first or the second electrode and the third electrode larger in the third electrode than the potential difference of the sustain discharge generated between the first and the second electrodes.   
   
   
       2 . A plasma display device comprising:
 a plasma display panel including: on a first substrate,
 a first and a second electrode groups, for discharges, plurally extending in a first direction and disposed approximately in parallel; 
 a third electrode group disposed in a gap between the first and the second electrodes, the discharge being executed it the gap; and 
 a first dielectric layer and a protective layer covering the first to the third electrode groups; 
   the plasma display panel further including: on a second substrate opposed to the first substrate,
 a fourth electrode group plurally extending in a second direction approximately perpendicular to the first direction and disposed approximately in parallel; 
 a second dielectric layer covering the fourth electrode group; 
 a barrier rib disposed at both sides of the fourth electrode; and 
 a phosphor layer formed between the barrier ribs and on the second dielectric layer; 
   a first drive circuit applying a voltage to the first electrode group;   a second drive circuit applying a voltage to the second electrode group;   a third drive circuit applying a voltage to the third electrode group; and   a fourth drive circuit applying a voltage to the fourth electrode group,   wherein, with application of voltage waveforms to the first to the fourth electrode groups of the plasma display panel from the first to the fourth drive circuit sides, when a sustain discharge is executed between the first and the second electrodes, before a potential difference of the sustain discharge between the first and the second electrodes is generated, a potential difference between the first or the second electrode and the third electrode is made larger in the third electrode than the potential difference of the sustain discharge generated between the first and the second electrodes.   
   
   
       3 . The plasma display device according to  claim 2 ,
 wherein when the sustain discharge is executed between the first and the second electrodes, a first power source of a positive polarity applied to the third electrode group by the third drive circuit is made higher than a second power source of a positive polarity applied to the first and the second electrode groups by the first and the second drive circuits.   
   
   
       4 . The plasma display device according to  claim 2 ,
 wherein in the third drive circuit, when the sustain discharge is executed between the first and the second electrodes, a circuit applying a potential of a positive polarity to the third electrode group includes a third power source which charges a capacity of the plasma display panel with LC resonance characteristics between the plasma display panel and the circuit, and which raises its resonance point.   
   
   
       5 . The plasma display device according to  claim 2 ,
 wherein in the third drive circuit, when the sustain discharge is executed between the first and the second electrodes, a circuit applying a potential of a positive polarity to the third electrode group includes a first route which charges a capacity of the plasma display panel with LC resonance characteristics between the plasma display panel and the circuit, and a second route which discharges the capacity of the plasma display panel.